How to implement password protected PDF file in iPhone SDK

Question

Does anyone have an idea how to implement a password protected PDF file in iphone sdk. I want me to create a PDF file with a password from my application. Please help me.

Any help would be greatly appreciated.

Answer 1

i had the same problem

I solved the problem with a little trick ... that is, I generated a PDF file and put it in a "password protected" zip file

I am using the ziparchive zip library which allow me to protect

Hope for this help

Answer 2

Here's another solution that might be better for your purposes:

CGPDFContextCreate , .

CGPDFContxtCreate Apple :

http://developer.apple.com/library/ios/documentation/GraphicsImaging/Reference/CGPDFContext/Reference/reference.html#//apple_ref/c/func/CGPDFContextCreate

, Apple, :

http://developer.apple.com/library/ios/documentation/GraphicsImaging/Reference/CGPDFContext/Reference/reference.html#//apple_ref/doc/constant_group/Auxiliary_Dictionary_Keys

Answer 3

We can provide a password for the PDF file using:

        NSDictionary *dictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"owner", kCGPDFContextOwnerPassword, @"user", kCGPDFContextUserPassword, kCFBooleanFalse, kCGPDFContextAllowsCopying, kCFBooleanFalse, kCGPDFContextAllowsPrinting,  nil];
        NSFileManager *fileManager = [NSFileManager defaultManager];
        NSString *fileName = [NSString stringWithFormat:@"%@/Documents/samplePDF.pdf", NSHomeDirectory()];
        if (![fileManager fileExistsAtPath:fileName]) {
            [fileManager createFileAtPath:fileName contents:nil attributes:nil];
        }

        // Create the PDF context using the default page size of 612 x 792.
        UIGraphicsBeginPDFContextToFile(fileName, CGRectZero, dictionary);